ICD-10-CM
M21.9: Unspecified acquired deformity of limb and hand
A header, not a billable code. Bill a more specific code under it.
Source: CDC ICD-10-CM FY2027 order file dated June 16, 2026. Publisher page
- Kind
- Header. Not a billable code.
- Category
- M21
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Codes under M21.9
A header groups codes and is not billed. A billable code is one you can report.
- M21.90Unspecified acquired deformity of unspecified limbBillable
- M21.92Unspecified acquired deformity of upper armHeader
- M21.93Unspecified acquired deformity of forearmHeader
- M21.94Unspecified acquired deformity of handHeader
- M21.95Unspecified acquired deformity of thighHeader
- M21.96Unspecified acquired deformity of lower legHeader
It's the public CDC file. Check the current ICD-10-CM guidelines before you code.
Excludes1
Excludes1 means these codes are not reported together.
From M21. A note on a category applies to every code under it.
Excludes2
Excludes2 means the other condition can be reported with this one when both are documented.
From M21. A note on a category applies to every code under it.